Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8ac6eca80e138d4…

MALICIOUS

PDF

41.0 KB Created: 2020-08-09 06:24:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6775399c92d4b0c5003689d335177ef2 SHA-1: 898a01a43011ad9328661b010550305a03f0cf78 SHA-256: c8ac6eca80e138d4de1dcbbd61bc06783b266010685bf448a168e7b01c4719d3
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links, many of which point to external resources. One critical heuristic firing indicates that the PDF links to known malicious redirector infrastructure, specifically 'https://ttraff.ru/pify?keyword=history+of+early+childhood+education+in+zimbabwe+pdf'. This suggests the document is part of a link farm or SEO poisoning campaign designed to redirect users to malicious sites. No scripts were extracted from this sample.

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.ru/pify?keyword=history+of+early+childhood+education+in+zimbabwe+pdf
    • http://popesafi.georgiacirclek.org/uploads/1/3/2/6/132696323/fa2f6.pdf
    • http://files.harrietslaughter.net/uploads/1/3/0/7/130739227/912d05cd84e5d0.pdf
    • http://files.mackenzieleighmeyer.com/uploads/1/3/1/0/131070911/727be2.pdf
    • http://gilat.avivapressman.com/uploads/1/3/1/4/131406717/sulogogudu.pdf
    • https://cdn.shopify.com/s/files/1/0431/0928/6050/files/bd_singh_biotechnology_download.pdf
    • https://cdn.shopify.com/s/files/1/0439/8543/6830/files/amino_acid_structure_chart.pdf
    • https://cdn.shopify.com/s/files/1/0433/3161/6923/files/zedawanirozorala.pdf
    • https://cdn.shopify.com/s/files/1/0433/3626/9983/files/surah_rahman_alkalam._pk.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/66689816557.pdf
    • https://cdn.shopify.com/s/files/1/0432/5811/8312/files/10156650787.pdf
    • https://cdn.shopify.com/s/files/1/0433/3184/6296/files/27016686898.pdf
    • https://cdn.shopify.com/s/files/1/0433/7192/1573/files/balitedeviru.pdf
    • https://cdn.shopify.com/s/files/1/0429/6422/2101/files/bivuzotixalop.pdf
    • https://cdn.shopify.com/s/files/1/0437/5206/3125/files/all_nba_teams_list.pdf
    • https://cdn.shopify.com/s/files/1/0436/1306/1277/files/ruvimuvaponamagumibekut.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006051.bin
b5525b9f9d81e5837de48cab3f165507d5576ff77f266c7cde0e453272280eb9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6051 5740 bytes
font_01_sfnt_off000073c7.bin
c4c78637731b5cf4c722025a149b0efdd6397e98b323f370347358dbdb13cdf1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73C7 10272 bytes

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